An aberrant sorcery discovered by exiled criminals. Theirs are the sorceries most reviled by the academy. Wounds the caster with thorns of punishment, sending a trail of bloodthorns running over the ground to impale enemies from below. This sorcery can be cast repeatedly. The guilty, their eyes gouged by thorns, lived in eternal darkness. There, they discovered the blood star.

The leftmost dead tree next to three Thorn Sorcerers just before the long stone bridge with the Fire Prelate at the beginning and a Golem Archer at the end.